Cundinamarca 2-8-0 Locomotives in Colombia


Class Details by Steve Llanso of Sweat House Media

Class 12 (Locobase 15366)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 78, pp. 166 Works number were 59135-59136 in April 1926.

These superheated mixed-traffic Consolidations were identical to the pair of 1921 Baldwins that went to Colombia's Southern Railway (Locobase 15018) except for a 3.4 inch (86 mm) difference in gauge. It was a small, balanced design that followed the Colombian policy of superheating small engines. The class used 8" (203 mm) piston valves to admit steam to the cylinders. Like many other Colombian engines, these locomotives operated at high altitudes, specified as 2,600 metres (8,530 feet) above sea level.

This railway had a long history in the planning, but only began construction in 1921. The road headed toward the lower Magdalena, which it reached in 1925 and where it met the Ferrocarril de Girardot. In the mid-1920s, ruling grades ran 3% and curves were as tight as 27 degrees (radii of 212 feet). By 1936, the Cundinamarca was extended toward Puerto Salgar.

After thirty years on the Cundinamarca, the 12 was sold to the Paz del Rio in 1957. When 13 went to the FC Nacional de Colombia, it took the number 40.

Principal Dimensions by Steve Llanso of Middle Run Media
Class12
Locobase ID15366
RailroadCundinamarca
CountryColombia
Whyte2-8-0
Number in Class2
Road Numbers12-13/8, 7
Gauge3'
Number Built2
BuilderBaldwin
Year1926
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.17 / 3.10
Engine Wheelbase (ft / m)16.92 / 5.16
Ratio of driving wheelbase to overall engine wheelbase 0.60
Overall Wheelbase (engine & tender) (ft / m)42.06 / 12.82
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)67,000 / 30,391
Engine Weight (lbs / kg)77,000 / 34,927
Tender Loaded Weight (lbs / kg)50,000 / 22,680
Total Engine and Tender Weight (lbs / kg)127,000 / 57,607
Tender Water Capacity (gals / ML)2400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)28 / 14
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x457
Tractive Effort (lbs / kg)16,747 / 7596.32
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.00
Heating Ability
Tubes (number - dia) (in / mm)60 - 2" / 51
Flues (number - dia) (in / mm)10 - 5.375" / 137
Flue/Tube length (ft / m)14 / 4.27
Firebox Area (sq ft / m2)60 / 5.57
Grate Area (sq ft / m2)16.50 / 1.53
Evaporative Heating Surface (sq ft / m2)693 / 64.38
Superheating Surface (sq ft / m2)166 / 15.42
Combined Heating Surface (sq ft / m2)859 / 79.80
Evaporative Heating Surface/Cylinder Volume188.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2970
Same as above plus superheater percentage3534
Same as above but substitute firebox area for grate area12,852
Power L17498
Power MT986.88

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